Finding the Fourth Proportional to 31,086.51, 46,590.76 and 13,296.29

Step by Step Solution

1. Step 1: Write the proportion equation
   31,086.51 : 46,590.76 = 13,296.29 : x
2. Step 2: Convert to fraction form
   31,086.51/46,590.76 = 13,296.29/x
3. Step 3: Cross multiply
   31,086.51x = 46,590.76 × 13,296.29
4. Step 4: Simplify right side
   31,086.51x = 619,484,256.28
5. Step 5: Solve for x
   x = 619,484,256.28/31,086.51
6. Step 6: Final answer
   x = 19,927.75